Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Thomas Kappes"'
Autor:
Peter C. Hauser, Carlo Colombo, Alexia W.E. Hodgson, Patrick Jacquinot, Thomas Kappes, Richard Stratz
Publikováno v:
CHIMIA, Vol 53, Iss 3 (1999)
Conventional analytical instruments are generally neither sufficiently robust nor adequately portable for field measurements in environmental applications or process analysis in industry. The requirements for these applications are ideally fulfilled
Externí odkaz:
https://doaj.org/article/8c85d220e7774bc6aeadc6fb8f515144
Publikováno v:
TrAC Trends in Analytical Chemistry. 20:133-139
The prototype of a field-portable battery-powered capillary electrophoresis instrument described here includes a high voltage supply capable of delivering the standard 30 kV at both polarities. The instrument has dimensions of 340 mm×175 mm×175 mm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17be475493cda63cdc71eeba99d6f7e5
https://doi.org/10.1016/s0165-9936(00)00088-1
https://doi.org/10.1016/s0165-9936(00)00088-1
Publikováno v:
Chemistry - A European Journal. 6:3714-3721
The development of the tetra-O-acetyl-D-glucopyranosyloxycarbonyl (AGlOC) and tetra-O-acetyl-beta-D-galactopyranosyloxycarbonyl (AGalOC) protecting groups, which are fully enzyme-labile, carbohydrate-derived urethanes, is described. The protected ami
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97c4bd9af923f2c7229181a72fd01042
https://doi.org/10.1002/1521-3765(20001016)6:20<3714::aid-chem3714>3.0.co
https://doi.org/10.1002/1521-3765(20001016)6:20<3714::aid-chem3714>3.0.co
Publikováno v:
Analytica Chimica Acta. 412:69-75
A coulometric diffusional titrator with a ruthenium dioxide pH-sensing electrode for the end-point detection in acid–base titrations is presented. The device was prepared by galvanic deposition of noble metals onto electrodes etched on a copper cla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43cd4a8ac40998824db7d0473e5f6a69
https://doi.org/10.1016/s0003-2670(00)00765-0
https://doi.org/10.1016/s0003-2670(00)00765-0
Autor:
Thomas Kappes, Peter C. Hauser
Publikováno v:
Electroanalysis. 12:165-170
Progress made for the three electrochemical detection methods which have been employed in capillary electrophoresis, namely amperometry, potentiometry and conductivity, is reviewed. For each of the three methods significant instrumental advances have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d8dc196552a9042139a77968e96a794
https://doi.org/10.1002/(sici)1521-4109(200002)12:3<165::aid-elan165>3.0.co
https://doi.org/10.1002/(sici)1521-4109(200002)12:3<165::aid-elan165>3.0.co
Publikováno v:
Analytica Chimica Acta. 393:77-82
A portable capillary electrophoresis instrument which incorporates both potentiometric and amperometric detection in a single unit is presented. It includes lead acid batteries as independent power source, a 30 kV high voltage power supply and the de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::837afc2e24739e30b4023ad0f151b2a0
https://doi.org/10.1016/s0003-2670(99)00149-x
https://doi.org/10.1016/s0003-2670(99)00149-x
Electrochemical detection methods in capillary electrophoresis and applications to inorganic species
Autor:
Thomas Kappes, Peter C. Hauser
Publikováno v:
Journal of Chromatography A. 834:89-101
The three electrochemical detection methods in capillary electrophoresis, namely conductometry, amperometry and potentiometry, are discussed and compared to the more common optical detection methods. The principles of each method and their implementa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4be132a56725f30418796dbf59c2d6b
https://doi.org/10.1016/s0021-9673(98)00685-2
https://doi.org/10.1016/s0021-9673(98)00685-2
Autor:
Thomas Kappes, Peter C. Hauser
Publikováno v:
The Analyst. 124:1035-1039
The design of a new amperometric detector for capillary electrophoresis is described. By employing the electrophoretic counter electrode as a polarized pseudo-reference electrode with an appropriate electronic circuitry it was possible to carry out t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::748fd0c6b6c6db10eec31528cd24c710
https://doi.org/10.1039/a901897b
https://doi.org/10.1039/a901897b
Publikováno v:
The Analyst. 123:2071-2077
Binary and ternary mixtures of cysteine, tyrosine and tryptophan were used to show how kinetic methods together with partial least squares regression (PLSR) can be used to overcome interferences in multicomponent determinations. Two methods were comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2f730e8163f3d05e8135fb5d146e577
https://doi.org/10.1039/a802893a
https://doi.org/10.1039/a802893a
Autor:
Thomas Kappes, Peter C. Hauser
Publikováno v:
Analytica Chimica Acta. 354:129-134
A copper metal electrode is used as potentiometric detector for capillary electrophoresis. The detector response is based on the complexation of copper ions at the electrode surface, which leads to a decrease of the electrode potential when the elute
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da2e1903e2c49e3284a12ae320a65e1b
https://doi.org/10.1016/s0003-2670(97)00439-x
https://doi.org/10.1016/s0003-2670(97)00439-x